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首页> 外文期刊>Aquatic Living Resources >Evaluation of selectivity and bycatch mitigation measures using bioeconomic modelling. The cases of Madagascar and French Guiana shrimp fisheries
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Evaluation of selectivity and bycatch mitigation measures using bioeconomic modelling. The cases of Madagascar and French Guiana shrimp fisheries

机译：使用生物经济模型评估选择性和兼捕缓解措施。马达加斯加和法属圭亚那虾类渔业的案例

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摘要

Tropical shrimp fisheries are characterized by various interactions with their natural environment and with other fisheries. These latter interactions can be explained by the high quantity of bycatch taken by industrial trawler fleets, which has a significant impact on fish populations associated with shrimps and thus also on finfish fisheries. Bycatch also includes emblematic species, which are subject to strict conservation measures decided by the international community. It seems important to identify and assess the biological and economic consequences of different mitigation measures (increase of mesh size, turtle excluder devices and bycatch reducing devices). This communication is based on case studies undertaken on the Indian white prawn (Fenneropenaeus indicus) and speckled shrimp (Metapenaeus monoceros) fisheries in Madagascar and on the brown shrimp (Farfantepenaeus subtilis) and pink spotted shrimp (Farfantepenaeus brasiliensis) fishery in French Guiana. A review of the impacts of these fisheries on resources and ecosystems is made and some results of experiments on mitigation devices given. Finally, the results of simulations obtained using a multi-species, multi-fleet, age-structured bioeconomic model, including modifications of catchability and costs related to the adoption of these devices, is presented and discussed.
机译：热带对虾渔业的特点是与其自然环境和其他渔业的各种相互作用。后者的相互作用可以用工业拖网渔船船队捕获的大量兼捕物来解释，这对与虾有关的鱼类种群以及对有鳍鱼类渔业都具有重大影响。兼捕还包括象征性物种，它们受到国际社会决定的严格保护措施的约束。识别和评估不同缓解措施的生物学和经济后果（增加筛孔尺寸，龟类排除装置和副渔获物减少装置）似乎很重要。本交流基于对马达加斯加的印度白虾（Fenneropenaeus indicus）和斑点虾（Metapenaeus monoceros）渔业以及法属圭亚那的棕色虾（Farfantepenaeus subtilis）和粉红色斑点虾（Farfantepenaeus brasiliensis）渔业的案例研究。对这些渔业对资源和生态系统的影响进行了回顾，并给出了一些缓解措施的实验结果。最后，介绍并讨论了使用多物种，多舰队，年龄结构的生物经济模型获得的仿真结果，包括对可捕获性的修改以及与采用这些设备有关的成本。

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